{"instruction": "You are an expert in event extraction. Please extract events from the input that conform to the schema definition. Return an empty list for events that do not exist, and return NAN for arguments that do not exist. If an argument has multiple values, please return a list. Respond in the format of a JSON string.", "schema": [{"event_type": "adverse event", "trigger": true, "arguments": ["Treatment.Freq", "Treatment", "Subject.Disorder", "Treatment.Duration", "Treatment.Time_elapsed", "Treatment.Disorder", "Subject.Gender", "Treatment.Route", "Treatment.Dosage", "Subject.Race", "Subject.Age", "Treatment.Drug", "Subject.Population", "Subject", "Effect", "Combination.Drug"]}, {"event_type": "potential therapeutic event", "trigger": true, "arguments": ["Treatment.Route", "Subject.Age", "Treatment.Time_elapsed", "Subject.Race", "Treatment.Dosage", "Subject", "Treatment", "Subject.Population", "Effect", "Treatment.Freq", "Treatment.Drug"]}], "input": "Two cases are described of chronic schizophrenic patients maintained on depot neuroleptics, who developed severe extrapyramidal symptoms following a period of heavy betel nut consumption."}
{"adverse event": [{"trigger": "developed ", "arguments": {"Treatment.Freq": "NAN", "Treatment": ["heavy betel nut consumption", "depot neuroleptics"], "Subject.Disorder": "NAN", "Treatment.Duration": "NAN", "Treatment.Time_elapsed": "NAN", "Treatment.Disorder": "chronic schizophrenic", "Subject.Gender": "NAN", "Treatment.Route": "NAN", "Treatment.Dosage": "NAN", "Subject.Race": "NAN", "Subject.Age": "NAN", "Treatment.Drug": ["depot neuroleptics", "betel nut"], "Subject.Population": "Two", "Subject": "Two cases", "Effect": "severe extrapyramidal symptoms", "Combination.Drug": "NAN"}}], "potential therapeutic event": []}